Answer:
After 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.
Explanation:
The half-life of a radioactive isotope of an element is the time taken for half the atoms present in a given amount of the element to undergo decay or disintegration. For example, the half-life of carbon-14 isotope is 5730 years. This means that, if there are 100 atoms of carbon-14 present in a given sample of a material, in the next 5730 years, approximately, 50 atoms of carbon-14 will be left in the material.
Since the half-life of radioactive isotopes are constant, these radioactive isotopes are used in the determining the ages of ancient life-forms as well as rocks.
In the given example, after 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.
Answer:
C. Organisms are grouped by species
Explanation:
In Ecology, organisms are grouped by species.
<u>Biosynthesis process in decomposers</u>
- Decomposer is the organism that breaks down complex organic compound into simpler form.
- Biosynthesis is a process that converts simpler compounds into more complex compound within living organisms.
- Bacteria, worm, slugs, fungi like mushroom are some examples of decomposer.
- Some process of biosynthesis is amino acid synthesis, photosynthesis, chemosynthesis and biosynthesis is necessary to carry out the cellular process in organism.
- Biosynthesis is also called as anabolism process. Precursor compounds, chemical energy, coenzymes are some requirements for biosynthesis process.